Resonant Power Receiver Switching for Charging Priority Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Contactless power supply systems using magnetic field resonance lack the ability to apply priority orders for charging multiple power supply destinations from a single power source, as existing systems cannot control the power supply state for individual destinations.
Innovation Solution
A contactless power receiving apparatus with a resonance element, excitation element, rectification circuit, and changeover circuit that allows for controlled power reception based on priority degrees, enabling each power supply destination to receive power according to its intended priority level by switching the AC power between supplied and non-supplied states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single power source supplies power to multiple power supply destinations using magnetic field resonance, then the power supply coverage is improved, but the ability to control power supply priority for individual destinations deteriorates
Solution Approach 1:
The patent divides the power reception control into separate segments by providing each power supply destination with its own changeover circuit that can independently switch between power reception and non-reception states. This segmentation allows each destination to be controlled individually while still receiving power from a single shared power source through magnetic field resonance.
Solution Approach 2:
The patent implements dynamic control by allowing each power supply destination to change its power reception state flexibly according to priority degrees. The changeover circuits enable real-time switching between receiving and non-receiving states, allowing the system to adapt dynamically to different charging priorities and conditions.
2Productivity
If multiple power supply destinations receive power simultaneously from a single power source, then the charging efficiency is improved, but the ability to apply priority orders for charging deteriorates
Solution Approach 1:
The patent implements periodic action by allowing power supply destinations to alternately switch between power reception and non-reception states based on their priority degrees. When one destination is receiving power, others with lower priority are in non-reception state, creating a periodic switching pattern that enables priority control while maintaining overall charging efficiency.
Solution Approach 2:
The patent changes the operational parameters of each power supply destination by controlling the impedance or resonance state of their respective changeover circuits. This parameter control allows the system to adjust which destinations receive power at any given time, implementing priority orders while maintaining efficient power transfer through magnetic field resonance.
3Ease of operation
If contactless power supply using magnetic field resonance is implemented, then the ease of operation is improved, but the ability to control individual power supply states deteriorates
Solution Approach 1:
The patent implements self-service by enabling each power supply destination to autonomously control its own power reception state through its dedicated changeover circuit. Each destination can independently switch between receiving and non-receiving states based on its charging needs and priority degree, eliminating the need for complex centralized control while maintaining contactless operation.
Solution Approach 2:
The patent applies universality by designing a standardized changeover circuit that can be implemented in each power supply destination, allowing the same circuit topology to serve multiple functions: enabling contactless power reception, implementing priority control, and allowing individual state management. This universal approach simplifies the overall system architecture.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables each power supply destination to receive power from the power source based on its assigned priority degree, allowing for efficient and controlled charging, even when multiple destinations are connected to a single power source.
Implementation Method 1
a resonance element (21) adapted to receive supply of AC power in a contactless fashion by resonance from a resonance element of a power supplying source
Implementation Method 2
an excitation element (22) adapted to receive supply of the AC power by electromagnetic induction from the resonance element
Data Source
Figure 1
Figure 2A~2C
Figure 3
AI summary
Disclosed herein is a contactless power receiving apparatus, including a resonance element adapted to receive supply of AC power in a contactless fashion by resonance from a resonance element of a power supplying source; an excitation element adapted to receive supply of the AC power by electromagnetic induction from the resonance element; a rectification circuit adapted to generate DC power from the AC power from the excitation element and output the DC power; and a changeover circuit adapted to change over the AC power between a supplied state and a non-supplied state to the rectification circuit.